relativity n. 相关(性);互相依存;相对性;相对论。 the general [restricted, special] theory of relativity 广义[狭义]相对论。
introduction n. 1.引导;传入。 2.介绍。 3.推广,采用;引进。 4.(育种)引种。 5.序,导言,绪言;【音乐】前奏,序奏。 6.初步,入门(书),概论。 The word is a recent introduction. 这个词是新传来的词。 a letter of introduction 介绍信。 introduction of better strains of seeds 良种的采用。 An I- to Chemistry 《化学入门》。
General relativity is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915. According to general relativity, the observed gravitational attraction between masses results from their warping of space and time.